crossuo/crossuo
deps/sdl-2.0.10-c1be3add38/CMakeLists.txt
:489
check_c_source_compiles("int main(int argc, char **argv) {
int a;
__sync_lock_test_and_set(&a, 1);
__sync_lock_release(&a); }" HAVE_GCC_SYNC_LOCK_TEST_AND_SET)